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1. A square matrix A is said to be symmetric if AT=A. Which one of the following matrices is symmetric? - 6 12 Г1 2 3 [1 2 1 [1 2 3 A - 2 - 4 В. |3 2 1 С. |1 2 D. 2 5 - 1 1 - 1 2 1 4 1 1 - 1 2 3 - 1 -9 5 7 2. Which of theproducts AB and BA is defined if A = and B =- 1 8 6 ? |4 -7 2 2 5 - 4 A BA В. АВ C. both D. none

1. A square matrix A is said to be symmetric if AT=A. Which one of the following matrices is symmetric? - 6 12 Г1 2 3 [1 2 1 [1 2 3 A - 2 - 4 В. |3 2 1 С. |1 2 D. 2 5 - 1 1 - 1 2 1 4 1 1 - 1 2 3 - 1 -9 5 7 2. Which of theproducts AB and BA is defined if A = and B =- 1 8 6 ? |4 -7 2 2 5 - 4 A BA В. АВ C. both D. none

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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1. A square matrix A is said to be symmetric if AT=A. Which one of the following matrices is symmetric? - 6 12 Г1 2 3 [1 2 1 [1 2 3 A - 2 - 4 В. |3 2 1 С. |1 2 D. 2 5 - 1 1 - 1 2 1 4 1 1 - 1 2 3 - 1 -9 5 7 2. Which of theproducts AB and BA is defined if A = and B =- 1 8 6 ? |4 -7 2 2 5 - 4 A BA В. АВ C. both D. none
Transcribed Image Text:1. A square matrix A is said to be symmetric if AT=A. Which one of the following matrices is symmetric? - 6 12 Г1 2 3 [1 2 1 [1 2 3 A - 2 - 4 В. |3 2 1 С. |1 2 D. 2 5 - 1 1 - 1 2 1 4 1 1 - 1 2 3 - 1 -9 5 7 2. Which of theproducts AB and BA is defined if A = and B =- 1 8 6 ? |4 -7 2 2 5 - 4 A BA В. АВ C. both D. none
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